The company Renn-Sportcars GmbH offers services in the areas of maintenance, repair and refinement of vehicles, particularly sports and racing cars as well as classic cars. The core activities include: Maintenance and repair of vehicles, including oil changes, tire changes and engine and chassis adjustments; Refinement of vehicles, including restoration and tuning; Inspection and analysis of vehicles with modern electronics; Transportation of racing vehicles to racing tracks; Sale of original parts and accessories. The company also offers specialized services such as optimization of engine performance and chassis adjustment for racing use.